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| author | Mark Zhang <markzhang@nvidia.com> | 2024-06-16 18:08:40 +0200 |
|---|---|---|
| committer | Leon Romanovsky <leonro@nvidia.com> | 2024-07-01 14:38:05 +0200 |
| commit | 060c642b2ab8b40b39f9db99c1d14c7d19ba507f (patch) | |
| tree | c9ff2ae8759cafa31861915d0f32c252c2e34db7 /drivers/infiniband/core | |
| parent | RDMA/mlx5: Support plane device and driver APIs to add and delete it (diff) | |
| download | linux-060c642b2ab8b40b39f9db99c1d14c7d19ba507f.tar.xz linux-060c642b2ab8b40b39f9db99c1d14c7d19ba507f.zip | |
RDMA/nldev: Add support to add/delete a sub IB device through netlink
Add new netlink commands and attributes to support adding and deleting
a sub IB device with admin privilege.
Examples:
$ rdma dev add smi1 type SMI parent ibp8s0f1
$ rdma dev del smi1
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Link: https://lore.kernel.org/r/77cbf1b36359642be8a8d8c5c2f4e585b544282f.1718553901.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/nldev.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c index bc79ee630d8d..b5f87e7a1cfd 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -167,6 +167,7 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = { [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC] = { .type = NLA_U8 }, [RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE] = { .type = NLA_U8 }, [RDMA_NLDEV_ATTR_DRIVER_DETAILS] = { .type = NLA_U8 }, + [RDMA_NLDEV_ATTR_DEV_TYPE] = { .type = NLA_U8 }, }; static int put_driver_name_print_type(struct sk_buff *msg, const char *name, @@ -2548,6 +2549,56 @@ err: return ret; } +static int nldev_newdev(struct sk_buff *skb, struct nlmsghdr *nlh, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; + enum rdma_nl_dev_type type; + struct ib_device *parent; + char name[IFNAMSIZ] = {}; + u32 parentid; + int ret; + + ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, + nldev_policy, extack); + if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || + !tb[RDMA_NLDEV_ATTR_DEV_NAME] || !tb[RDMA_NLDEV_ATTR_DEV_TYPE]) + return -EINVAL; + + nla_strscpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME], sizeof(name)); + type = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_TYPE]); + parentid = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); + parent = ib_device_get_by_index(sock_net(skb->sk), parentid); + if (!parent) + return -EINVAL; + + ret = ib_add_sub_device(parent, type, name); + ib_device_put(parent); + + return ret; +} + +static int nldev_deldev(struct sk_buff *skb, struct nlmsghdr *nlh, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; + struct ib_device *device; + u32 devid; + int ret; + + ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, + nldev_policy, extack); + if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) + return -EINVAL; + + devid = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); + device = ib_device_get_by_index(sock_net(skb->sk), devid); + if (!device) + return -EINVAL; + + return ib_del_sub_device_and_put(device); +} + static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = { [RDMA_NLDEV_CMD_GET] = { .doit = nldev_get_doit, @@ -2646,6 +2697,14 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = { [RDMA_NLDEV_CMD_STAT_GET_STATUS] = { .doit = nldev_stat_get_counter_status_doit, }, + [RDMA_NLDEV_CMD_NEWDEV] = { + .doit = nldev_newdev, + .flags = RDMA_NL_ADMIN_PERM, + }, + [RDMA_NLDEV_CMD_DELDEV] = { + .doit = nldev_deldev, + .flags = RDMA_NL_ADMIN_PERM, + }, }; void __init nldev_init(void) |